{
    "id": "CVE-2011-1020",
    "published": "2011-02-28 16:00:01",
    "last_modified": "2026-06-16 23:28:34",
    "cvss_score": "4.6",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
    "cwe": "CWE-200",
    "description": "The proc filesystem implementation in the Linux kernel 2.6.37 and earlier does not restrict access to the /proc directory tree of a process after this process performs an exec of a setuid program, which allows local users to obtain sensitive information or cause a denial of service via open, lseek, read, and write system calls.",
    "epss_score": "0.00923",
    "epss_percentile": "0.59367",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-13 18:17:09",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "linux",
            "product": "linux_kernel"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "41770",
            "title": "Linux Kernel 2.6.32 (Ubuntu 10.04) - '/proc' Handling SUID Privilege Escalation",
            "date": "2011-01-17",
            "url": "https://www.exploit-db.com/exploits/41770"
        }
    ],
    "refs_list": [
        "http://openwall.com/lists/oss-security/2011/02/24/18",
        "http://openwall.com/lists/oss-security/2011/02/25/2",
        "http://seclists.org/fulldisclosure/2011/Jan/421",
        "http://secunia.com/advisories/43496",
        "http://securityreason.com/securityalert/8107",
        "http://www.halfdog.net/Security/2011/SuidBinariesAndProcInterface/",
        "http://www.securityfocus.com/bid/46567",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/65693",
        "https://lkml.org/lkml/2011/2/10/21",
        "https://lkml.org/lkml/2011/2/7/368",
        "https://lkml.org/lkml/2011/2/7/404",
        "https://lkml.org/lkml/2011/2/7/414",
        "https://lkml.org/lkml/2011/2/7/466",
        "https://lkml.org/lkml/2011/2/7/474",
        "https://lkml.org/lkml/2011/2/9/417",
        "http://openwall.com/lists/oss-security/2011/02/24/18",
        "http://openwall.com/lists/oss-security/2011/02/25/2",
        "http://seclists.org/fulldisclosure/2011/Jan/421",
        "http://secunia.com/advisories/43496",
        "http://securityreason.com/securityalert/8107",
        "http://www.halfdog.net/Security/2011/SuidBinariesAndProcInterface/",
        "http://www.securityfocus.com/bid/46567",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/65693",
        "https://lkml.org/lkml/2011/2/10/21",
        "https://lkml.org/lkml/2011/2/7/368"
    ]
}